Move dmd files into compiler/

compiler/test/compilable/pragmapack.c

@@ -0,0 +1,45 @@
+// Test #pragma pack
+
+#pragma pack(2)
+struct S
+{
+    int i;
+    short j;
+    double k;
+};
+#pragma pack()
+
+_Static_assert(sizeof(struct S) == 4 + 2 + 8, "1");
+
+#pragma pack(push, 8)
+struct S2
+{
+    char a, b;
+};
+#pragma pack(pop)
+
+_Static_assert(sizeof(struct S2) == 1 + 1, "2");
+
+#pragma pack(push, 8)
+struct S3
+{
+    unsigned short u;
+    char a;
+};
+#pragma pack(pop)
+
+_Static_assert(sizeof(struct S3) == 4, "3");
+
+#pragma pack()
+#pragma pack(show)
+#pragma pack(2)
+#pragma pack(push)
+#pragma pack(push,2)
+#pragma pack(push,abc)
+#pragma pack(push,abc,2)
+#pragma pack(pop)
+#pragma pack(pop,a)
+#pragma pack(pop,2)
+#pragma pack(pop,a,b,4,8,c)
+
+int x;